Re: pstricks

Ad esempio:

\usepackage{pstricks}
\usepackage{pst-eucl}

\begin{document}

\psset{xunit=1.0cm,yunit=1.0cm, dotstyle=*,dotsize=2pt 0,labelsep=2pt, linewidth=0.6pt, PointNameSep=2.5mm}

\begin{pspicture*}(-0.5,-0.5)(2.5,2.5)

\pstTriangle(0,0){A}(2,0){B}(0.5,2){C}
\pstSegmentMark[SegmentSymbol=MarkCros]{A}{B}
\pstSegmentMark[MarkAngle=90, SegmentSymbol=MarkHash]{B}{C}
\pstSegmentMark[MarkAngle=90, SegmentSymbol=MarkHashh]{C}{A}

\end{pspicture*}
\end{document}

Ciao,
Andrea